package com.atguigu.springcloud.alibaba.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.atguigu.springcloud.alibaba.myhandler.CustomerBlockHandler;
import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author xiaolong
 * @version 1.0
 * @description: TODO
 * @date 2021/10/7 19:08
 */
@RestController
public class RateLimitController {

    /**
     * @param
     * @return
     * @description: 如果设置了blockHandler就用 自定义的
     */
    @GetMapping("/byResource")
    @SentinelResource(value = "byResource", blockHandler = "handleException")
    public CommonResult byResource() {
        return new CommonResult(200, "按资源名称限流测试ok", new Payment(2020L, "serial001"));
    }

    public CommonResult handleException(BlockException exception) {
        return new CommonResult(444, exception.getClass().getCanonicalName() + "\t 服务不可用");
    }

    /**
     * @param
     * @return
     * @description: 如果没有 blockHandler，则用系统自带的流控提示
     */
    @GetMapping("/rateLimit/byUrl")
    @SentinelResource(value = "byUrl")
    public CommonResult byUrl() {
        return new CommonResult(200, "按url限流测试ok", new Payment(2020L, "serial002"));
    }


    /**
     * @return
     * @description: 自定义全局异常方法
     * blockHandlerClass 指定异常类  blockHandler 具体的方法
     */
    @GetMapping("/rateLimit/customerBlockHandler")
    @SentinelResource(value = "customerBlockHandler", blockHandlerClass = CustomerBlockHandler.class, blockHandler = "handlerException2")
    public CommonResult customerBlockHandler() {
        return new CommonResult(200, "按客户自定义", new Payment(2020L, "serial002"));
    }


}
